-40° is the only temperature that is the same in both Fahrenheit and Celsius.
The four kings in a deck of cards represent real rulers. The King of Diamonds shows Julius Caesar, the King of Clubs displays Alexander the Great, the King of Spades depicts David of Israel, and finally the King of Hearts shows Charles of France.
On November 7 1944, Franklin Delano Roosevelt was elected to a fourth term as President. The 22nd Amendment to the Constitution was later passed in 1951, limiting a president’s tenure in office to two terms of four years each. As a result, Roosevelt remains as the only President to have served for more than two terms.
The taiga is the largest biome in the world. It stretches across Alaska, Canada, Scandinavia, and Russia, reaching across the Northern Hemisphere.
Woodrow Wilson is the only US President to have held a PhD. He gained his doctorate in political science from John Hopkins University.
Ashrita Furman holds the world record for having the most Guinness World Record titles. He has set more than 600 records and currently holds over 200.
The largest snowflakes ever recorded were 15 inches wide. Guinness World Records lists the largest snowflakes as having fallen during a storm in January 1887 at Fort Keogh, in Montana. A nearby rancher, the book says, called them ‘larger than milk pans’.
The African elephant, Loxodonta Africana, has the longest known gestation period of all mammals. These elephants carry their babies in the womb for around 660 days or 22 months. Camels and giraffes also carry their babies for a long time – about 400 days for both animals.
A baby swan is called a cygnet, and the name of the constellation Cygnus is from the Latin word for swan.
The first modern coin-operated vending machines were invented by Percival Everitt in 1833. They were first introduced in London in the United Kingdom in the early 1880s, dispensing post cards. The machines were popular and soon became a widespread feature at railway stations and post offices.